TPS3851G18SDRBR集成电路（IC）的监控器规格书PDF中文资料

TPS3851G18SDRBR属于集成电路（IC）的监控器。由德州仪器制造生产的TPS3851G18SDRBR监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。

1 Features

• Input voltage range: VDD = 1.6V to 6.5V

• 0.8% Voltage threshold accuracy

• Low quiescent current: IDD = 10μA (typical)

• User-programmable watchdog timeout

• Open-drain outputs

• Precision undervoltage monitoring:

– Supports common rails from 1.8V to 5.0V

– 4% and 7% Undervoltage thresholds available

– 0.5% Hysteresis

• Watchdog disable feature

• Factory-programmed precision watchdog and

reset timers

• Manual reset input (MR)

• Available in a small 3mm × 3mm, 8 pin VSON

package

• Junction operating temperature range:

–40°C to +125°C

2 Applications

• WLAN/Wi-Fi access point

• Wireless security camera

• IP network camera

• String inverter

• Blood pressure monitor

• Electricity meter

3 Description

The TPS3851 combines a precision voltage

supervisor with a programmable watchdog timer. The

TPS3851 comparator achieves a 0.8% accuracy

(–40°C to +125°C) for the undervoltage (VITN)

threshold on the VDD pin. The TPS3851 also includes

accurate hysteresis on the undervoltage threshold

making the device an excellent choice for use with

tight tolerance systems. The supervisor RESET delay

features a 15% accuracy, high-precision delay timing.

The TPS3851 includes a programmable watchdog

timer for a wide variety of applications. The dedicated

watchdog output (WDO) enables increased resolution

to help determine the nature of fault conditions.

The watchdog timeouts can be programmed either

by an external capacitor, or by factory-programmed

default delay settings. The watchdog can be disabled

via logic pins to avoid undesired watchdog timeouts

during the development process.

TPS3851 is available in a small 3.00mm × 3.00mm,

8-pin VSON package.